Chromatography Vials | VWR. DescriptionManufactured from clear type I borosilie glass, these headspace vials accept 20 mm aluminum seals. ,14227-796CS,14227-800CS,14227-790CS,14227-794CS,14227-798CS,66021-220CS,80700-770CS 10-425 Wide Opening Glass Screw-Thread Vials